After a successful Kickstarter campaign, GeoGebra plans to expand their offerings to include an iPad and Android version.

Dynamic geometry, algebra and calculus

GeoGebra is dynamic geometry software. Constructions can be made with points, vectors, segments, lines, polygons, conic sections, inequalities, implicit polynomials and functions. All of them can be changed dynamically afterwards. Elements can be entered and modified directly on screen, or through the Input Bar. GeoGebra has the ability to use variables for numbers, vectors and points, find derivatives and integrals of functions and has a full complement of commands like Root or Extremum. Teachers and students can use GeoGebra to make conjectures and to understand how to prove geometric theorems.

GeoGebra can also create code that can be used inside LaTeX files in order to create that same images that GeoGebra generates, through the PSTricks package, the PGF/TikZ packages, orAsymptote code.

GeoGebraTube is the official repository website of GeoGebra products and GeoGebra related free resources. It started working in June 2011, and it contains more than 30 000 (in April 2013) materials, like interactive presentation, games, and lessons made by GeoGebra.

Licensing

Most parts of the GeoGebra program are licensed under GPL and CC-BY-SA, making them free software. However some parts, including the Windows and Mac installers, have a license which forbids commercial use and are therefore not free software. In practice, this means that non-commercial use by teachers and students is always free of charge, while commercial users may need to pay license fees. For details see the GeoGebra license description.

Since July 2010 the Debian Linux distribution offers a free version of GeoGebra in which all unfree parts of the program were removed or replaced by free software. This version may be used for commercial purposes without paying licensing fees. Hovewer, since version 4.2, Geogebra has changed the licence: Geogebra is no more considered free software and versions >= 4.2 are no more included in Debian.